PLEASE HELP ME!!!!!

Am sooo frustrated! Have looked at this site for ages and have not found an answer!
All my friends have limewire and talk about how gd it is all da time...so i downloaded it...BUT it doesnt work!
I can get into LW and search for music but it takes for ages and has no results. In the corner there is an icon firewall icon....so obviously there is an firewall even though i hav followed the sites info anbout gettin rid of them. It also sez that it is "Enabling Open Information Sharing".
I have a XP pc and would really appreciate some help ASAP !

Thnx Heaps